Loop cutter



1936- w. H. LOCKETT ET AL 2,051,491

LOOP CUTTER Filed Nov. 29, 1930 2 Shets-Sheet 1 2Z1 5% f7 17 1a m C) Z INVENTORS WILSONHLOCKETT PETER JENKINS.

%@ ATTORNEY Aug. 18, 1935.

w. H. LOCKETT ET AL 2,051,491

LOOP CUTTER Filed Nov. 29, 1950 I 2 Sheets-Sheet 2 INVENTOiRS Wnuaou HLocKETT -7Q N 73- BY PETER Jmnma ATTORNEY Patented Aug. 18, 1936 PATENT OFFICE LOOP CUTTER Wilson H. Lockett and Peter Jenkins,

Fort Worth, Tex.

Application November 29, 1930, Serial No. 498,936

6 Claims.

This invention relates to loop cutters and has particular reference to a machine for use in factories where mens trousers are manufactured andwhere it is necessary to cut strips of material into predetermined lengths for the purpose of making loops for belts around the waist of said trousers and its principal object resides in the pro-vision of an apparatus comprising a novel combination of parts by which strips of material 10 may be out into shorter lengths with rapidity and accuracy.

' Another object of the invention resides in the provision of a mechanism whereby long strips of material can be passed therethrough without the 15 aid or assistance of any human agency, other than the starting of the material through the mechanism, and which will automatically sever from such strips of .material a multiplicity of shorter lengths.

20 Still another object of the invention is manifest in the provision of a device of the character described wherein are provided certain novel arrangements by which may be accomplished the severance of great numbers of short strips, the

25 length of which can be predetermined, from strips of material of greater lengths.

Broadly, the invention comprehends a mechanism comprising :a combination of parts capable of accomplishing the purpose above set forth, yet

30 simple and inexpensive in construction and compact in form, and which by its use, a great saving of time and expense may be realized.

While the foregoing objects are paramount, other and lesser objects will become manifest as the description proceeds taken in connection with the appended drawings wherein:

Reference is had to the accompanying drawings whichform a part of this application.

Fig. 1 is a side elevation .of the machine as- 40 sembled.

' Fig. 2 is a plan view with the upper frame member removed for illustrating the inclosed gearing.

Fig. 3 is a front elevation of the machine assembled.

45 Fig. 4 is a perspective view of the drive shaft and the feed roller driven by the'shaft.

Fig. 5 is abroken plan view, showing the coupling of the feed roller to a collar on the drive shaft.

50 Fig. 6 is a plan view of a roller, illustrating a larger size roller.

Fig. 'I is a perspective view of box or chuck for holding the feed roller in operative position.

In factories where it is necessary to cut ma- 55 terial into short lengths and where large quantities of such material are required it is desirable to afford some mechanical device to accomplish this. Much time is required to out such strips by hand, using a pair of shears, or the like, making such operations expensive as well as undesirable 6 for the reason that it' is difficult to maintain absolute accuracy in the varying lengths of the material which sometimes result in waste.

Similar characters of reference are used to indicate the same parts throughout the several 10 Views.

The machine is provided with a base member I which is provided with flange supports 2 cast with the frame. The machine is provided with a top member 3 which is made rigid with the memher I by bolts 4. A driving shaft 5 is journaled in the frame member I. Shaft 5 is driven by a pulley 6 which is rigidly attached to the shaft. The member I is a hollow frame, providing space Within the frame for gear wheels. 'A bevel gear Wheel I is rigid with shaft 5 and shaft 5 drives wheel I and wheel I drives a gear wheel 8 which is rigid with a-shaft 9 and drives this shaft. The shaft 9 drives the cutter blade II). The shaft 9 has a flanged head I I which has a slot I2 therein to receivethe blade II]. The shank of the blade is placed in the slot I2 and a spring I3 is placed on the outside of the blade II). A screw I lbinds the spring I3 and blade II] in the slot in the head I I. A stationary blade I5 is mounted in a slot in the frame member I to cooperate with the revolving blade III. Blade I5 is held in place by a screw It. For taking up Wear of the blade I5, one or more shims II'mayv be-placed between the inner. end of the blade and. the back wall of its slot.

. Means are'provided for feeding the strips of cloth or woven tape past the blades I0 and I5.

A transverse groove I8 is formed in the face of the member I for the passage of the cloth strip 40 or tape. The tape or loop material is fed through the slot l8 by a milled driven roller I9 which is mounted on the shaft'5 and coupled to a collar 20; The collar 20 is rigid with the shaft 5 and has a rib 2| integral therewith and the roller I9 has a groove'ZZ to receive the rib 2|. The roller I9 is held in place by a locking latch 23 which is mounted on a stud bolt 24 which is screwed into the frame member I.

The feed roller I9 is carried in a box or chuck 25 which is mounted and horizontally disposed in a'cavity in the frame member I. The top of .the block 'or'chuck 25' is flush with the surface of the frame I and the chuck 25 has a groove IB' for the passage of the tape or cloth loop material.

7 The bottom of thegroove i8 and the bottom of V the groove i8 in the frame member are flush with each other, so that the loop material will not be obstructed in itspassage to the blades [0 and I5. The chuck has a cylindrical opening 26 to receive the roller l9. The opening 26 is cut through the surface of the bottom of groove l8 so that. the periphery of the roller 19 will project high enough to engage the loop material to force the material towards the blades i0 and I5. See ,2! inFig..7.'

.In order to hold the passing loop making materialin place, a roller 28 of yielding material is yieldingly mounted to press on the passing loop material. 29 which is attached to and carried by a thrust rod 30 which is vertically disposed in the frame member 3 and the rod 30 is held in vertical position by the cylindrical opening through the mem- V downward by a spring which is attached atone end and at the othe'r end rests on the rod 32. Thespring34 projects through a bracket 35' which is attached to, the frame member 3. A set screw 36 is screwed through the bracket 35 and bears on" the spring 34 and more or less pressure can be put on the spring by means of the screw 36.

In operation, a roller i Sis mounted in the chuck 25 and the chuck with the roller is mounted in the cavity in frame member I and the roller I9 is turned manually or otherwise until the slot 22 V engages the rib 2l of thecoupling roller 20'. i The to'the blades ifljand l5. In order to run'the loop. material is run through the slots 18 and i8 loop material through the slots I8 and I8, it is r necessary to raise the roller 28 by thelever 33. 1 When the lever 33 is released, the roller "will be pressed on theloop material by the spring 34.

'The machineis then started to running by the powerwheel or pulley 6'. This will'drive shaft 5 and the roller 19 will'feed the loop material to the blades I 0 and I5 continuously. The blade 10 will be driven from the shaft 5 and will cooperate with the stationary blade l5 for cutting the loops. The variationin' the lengths of the loops will" be accomplished by using different sizederollersf i9 and'using different chucks 25 having larger openings26'for the larger rollers.

A guard 31 is provided for guiding the loop forming material after the material leaves the groove Hi. This guard' is attached to the upper face of the frame member I and has a flange 38 to form one sideof the passage way to the blades llandlS. I e V The purpose of the invention being to cut strips of material into predetermined lengths, it is necessary'that the knurled roller make one revolution to one ofthe revolving knife l0 and, due to the'arrangement ofgears l and 8, this is accomplished? Obviously; by changing the size of the rollers 19 a'section may be cut fromthe material of greater or lesser length, depending upon 7 the circumference of the feeding or knurled: roller 319.

By providing several chucks 25, each having a different size passage 26 therethrough arranged The roller28 is journaled in a bracket to allow its axial point to register with the shaft 5, feeding or knurled rollers iii of varying sizes may be disposed therein. The only function of the roller 28 being to provide a tensionupon the material to insure proper feeding through the machine.

Although the invention has been described with great particularity, it is understood that it is not intended'that the same shall be limited to the specific arrangement and construction of 7 parts and that certain changes and modifications may be resorted to from time to time as may fall within the scope and meaning 'of the appended claims.

What we claim, is,-- V 1. In a, device for cutting strips of material into predetermined lengths, a base having a recess therein capable of receiving interchangeable chucks each of which is adapted to receive a feed roller of given size rotatably disposed therein for advancing strips of material apredetermined distance before cutting. it

'2. In a device for cutting strips of material into predetermined lengths, a base and head, means in said base to receive interchangeable 'chucks each having'different sized annular passages therethrough to receive varying sized knurled feed rollers capable of advancing the materiala distance equal to the circumference thereof to be cut. r V r '3. In a device for cutting strips of material into. predetermined lengths, a base and head, a

recess in said base capable of receiving interchangeable chucks, each of said chucks having-a different sized annular passage therethrough in which are rotatably disposed knurled feed rollers of varying circumferences capable of advancing the said strips of material a distance equal to their circumferences before being cut into predetermined lengths. r

4. Ina deviceifor cutting strips of material into predetermined lengths, a base'and head, a recess in said base capable of receiving interchangeable chucks, a varying sized annular pas sage through each of the said chucks capable of receiving feed rollers of different circumferences to advance the said material a distance equal to the circumferences of the said rollers upon each revolution thereof enabling said material to out into predetermined lengths. V

'5. In a device for cutting strips of. material into predetermined lengths, a base and a head, a recess in the said base receiving interchangeablechucks, each having a-single bore of a different diameter. rotatably receiving" an. interchangeable knurled feed roller of a circumference equal to that of the diameter of the said bores in the said chucks advancing the saidstrips of material a predetermined distance before being cut.

6. In a device for cutting strips of "material into predetermined lengths, a base anda head, 7

means in the said base to receive interchangeable chucks, each having a single bore therethrough and each of the said bores varying in diameter and receiving a knurled feed roller of a circumference equal to the diameter-f the said bores, the said feed rollers advancing the material to be cut a distance equal to the circumference of the saidfeed rollers. i V

7 WILSON PETER JENKINS. 

